array(3) {
  [0]=>
  int(4399)
  [1]=>
  string(210) "Blaunstein N., and Christodoulou Ch. G. Radio Propagation and Adaptive Antennas for Wireless Communication Links - Terrestrial, Atmospheric and Ionospheric. Hoboken, New Jersey, Wiley Interscience, 2007. 614 p."
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '4399-1' for key 'citations.citations_submission_seq'</h1>